A method and apparatus for grinding of iron ore and / or iron ore concentrate

摘要

A method for the grinding of iron ore or iron ore concentrate (4), wherein the material in a material bed roll mill (1) is ground in circulation, characterized in thata. the in the material bed roll mill ground iron ore or iron ore concentrate quantity in a first material stream (6) and in a second material stream (7) is divided,example, the first material stream (6) of the in the material bed roll mill ground iron ore or iron ore concentrate is recirculated to the material bed roller mill andc. the second material flow stream (7) of the iron ore or iron ore concentrate in coarse material (8) and fine material (9) is graded, wherein a wet classification process for the application,that the coarse material (8) before the new object in the material bed roller mill (1) at least a part of its moisture is extracted from,e. the coarse material (8) in the material bed roller mill is again is applied in order to the iron ore or iron ore concentrate to a fineness of 1.600 to 2.200 blaine to grind.